390343228 has 24 divisors (see below), whose sum is σ = 745807104. Its totient is φ = 177284400.

The previous prime is 390343211. The next prime is 390343237. The reversal of 390343228 is 822343093.

It is a junction number, because it is equal to n+sod(n) for n = 390343193 and 390343202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66301 + ... + 71947.

It is an arithmetic number, because the mean of its divisors is an integer number (31075296).

Almost surely, 2^390343228 is an apocalyptic number.

It is an amenable number.

390343228 is a deficient number, since it is larger than the sum of its proper divisors (355463876).

390343228 is a wasteful number, since it uses less digits than its factorization.

390343228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233 (or 7231 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 390343228 is about 19757.1057597007. The cubic root of 390343228 is about 730.8286255911.

The spelling of 390343228 in words is "three hundred ninety million, three hundred forty-three thousand, two hundred twenty-eight".